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https://www.readbyqxmd.com/read/29458234/ultrasonographic-anatomy-of-reproductive-female-leopard-geckos-eublepharis-macularius
#1
Ophélie Cojean, Claire Vergneau-Grosset, Isabelle Masseau
Captive leopard geckos (Eublepharis macularius) often present to the exotic clinic for gastrointestinal impactions, follicular stasis, or dystocia. To our knowledge, normal ultrasonographic anatomy of these lizards has not been described. The objectives of this prospective, anatomic, analytical study were to develop ultrasound techniques for this species and to describe the normal sonographic anatomy of the head, coelomic cavity, and tail. Eleven, healthy, female leopard geckos were included. A linear array 13-18 MHz transducer was used...
February 19, 2018: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/29458201/computer-assisted-surgery-in-acetabular-fractures-virtual-reduction-of-acetabular-fracture-using-the-first-patient-specific-biomechanical-model-simulator
#2
M Boudissa, H Oliveri, M Chabanas, J Tonetti
Preoperative planning for the management of acetabular fracture is founded on geometric models allowing virtual repositioning of the bone fragments, but not taking account of soft tissue and the realities of the surgical procedure. The present technical note reports results using the first simulator to be based on a patient-specific biomechanical model, simulating the action of forces on the fragments and also the interactions between soft issue and bone: muscles, capsules, ligaments, and bone contacts. In all 14 cases, biomechanical simulation faithfully reproduced the intraoperative behavior of the various bone fragments and reduction quality...
February 16, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29458136/changes-in-anatomic-position-of-root-canal-orifices-in-pluriradicular-teeth-following-re-location-during-endodontic-treatment
#3
Darian Rusu, Petra Surlin, Stratul Stefan-Ioan, Marius Boariu, Calniceanu Horia, Adrian Kasaj, Cosmin Sinescu, Didilescu Andreea
Direct access to the root canals in posterior teeth for endodontic treatment is most frequently facilitated by the straightening of the coronal parts of the root canals, having as a consequence the relocation of the canal orifices on the map of the floor of the pulp chamber (Christie & Thompson, 1994). This procedure intentionally moves the coronal aspect of a canal away from the center of the chamber, while simultaneously removing internal dentin from the pulp chamber walls. The aim of this study was to evaluate the displacement resulting from the relocation of root canal orifices during the initial phase of rotary root canal treatment in molars using the dental operating microscope (DOM) and digital image processing...
February 16, 2018: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29458135/porcine-heart-interatrial-septum-anatomy
#4
Mateusz K Hołda, Mateusz Koziej, Katarzyna Piątek, Wiesława Klimek-Piotrowska
BACKGROUND: The left-sided atrial septal pouch (SP), a recently re-discovered anatomical structure within the human interatrial septum, has emerged as a possible source of thrombi formation and a trigger for atrial fibrillation, thereby potentially increasing the risk for ischemic stroke. In many studies, the swine interatrial septum has been used as model of the human heart. Also, possible new strategies and devices for management of the SPs may first be tested in this pig model. Therefore, in this study, we aimed to evaluate swine interatrial septum morphology and to compare it with the human analog, especially in the light of SP occurrence...
February 16, 2018: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29457874/computed-tomography-analysis-of-frontal-cell-prevalence-according-to-the-international-frontal-sinus-anatomy-classification
#5
Garret Choby, Andrew Thamboo, Tae-Bin Won, Jooyeon Kim, Liang Chun Shih, Peter H Hwang
BACKGROUND: The International Frontal Sinus Anatomy Classification (IFAC) is an international consensus document published in 2016 to standardize the nomenclature of cells in the region of the frontal recess and frontal sinus. The IFAC was designed to be surgically relevant and anatomically precise. The current study was undertaken to assess the prevalence of the frontal cell variants as defined by the IFAC, as well as to determine the interrater reliability of the IFAC. METHODS: Three independent reviewers examined triplanar nondiseased maxillofacial computed tomography (CT) scans to assess the anatomy of the frontal recess according to the IFAC system...
February 19, 2018: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/29457651/progressive-recruitment-of-contralesional-cortico-reticulospinal-pathways-drives-motor-impairment-post-stroke
#6
Jacob G McPherson, Albert Chen, Michael D Ellis, Jun Yao, C J Heckman, Julius P A Dewald
KEY POINTS: Activation of the shoulder abductor muscles in the arm opposite a unilateral brain injury causes involuntary increases in elbow, wrist and finger flexion in the same arm, a phenomenon referred to as the flexion synergy. It has been proposed that flexion synergy expression is related to reduced output from ipsilesional motor cortex and corticospinal pathways. In this human subjects study, we provide evidence that the magnitude of flexion synergy expression is instead related to a progressive, task-dependent recruitment of contralesional cortex...
February 19, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29457420/-treatment-of-intercondylar-fracture-of-the-humerus-through-internal-and-external-elbow-approach-or-elbow-posterior-olecranon-osteotomy-approach
#7
Yun-Xiang Zhong, Xiong-Hui Zhang, Guo-Xiong Cai, Hong-Zhi Zhou, Wen-Li Yang, Xi-Bin Pan, Long-Zhou Guan, Huo-Ling Zhang
OBJECTIVE: To investigate the efficacy, advantages and disadvantages of internal and external elbow joint approach and olecranon osteotomy approach for the treatment of intercondylar fracture of humerus. METHODS: From October 2012 to May 2016, 18 cases of intercondylar fracture of humerus were treated by operation including 12 males and 6 females with a mean age of 33.5 years old (ranged from 4 to 56 years old); 8 cases were operated by internal and external elbow joint approach, 10 cases were operated by olecranon osteotomy approach...
October 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29457408/-double-plate-fixation-via-combined-approaches-for-the-treatment-of-old-tibial-plateau-fractures-of-schatzker-type-iv
#8
Hong-Lue Tan, Peng-Yi Dai, Wei-Feng Liu, Yan-Hao Yuan
OBJECTIVE: To explore the clinical efficacy of double-plate fixation for the treatment of old tibial plateau fractures with Schatzker type IV through anterior midline and posteromedial approaches. METHODS: From July 2013 to July 2015, 15 patients with old tibial plateau fractures were treated with internal fixation using locking reconstructive plate for the posteromedial fragment and anatomical locking plate for anteromedial fragment through antero midline and posteromedial approaches...
October 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29457405/-morphology-characteristics-of-sural-bean-bone-and-it-s-role-in-knee-joint-diseases
#9
REVIEW
Lin Xu, Wei-Kun Hou, Peng Xu
Fabella is a common sesamoid bone. In recent years, people have paid more attention to its anatomic location, distribution characteristics in crow, importance in stabilizing knee joint and related diseases. This article reviews the anatomy, distribution and the relationship between the calf bone and the knee joint diseases, so as to strengthen the attention of the bones in the diagnosis and treatment of knee diseases.
November 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29457393/-anatomical-study-on-the-reconstruction-of-the-metacarpal-bone-with-autogenous-iliac-crest-grafting
#10
Dao-Yi Miao, Ling-Zhou Zhang, Hui-Hui Li, Guo-Jing Yang
OBJECTIVE: To explore the similarity between the iliac crest and the metacarpal bone, so as to provide an anatomical basis for the reconstruction of the metacarpal bone of the hand with the iliac crest grafting. METHODS: There are 16 upper limb specimens and 10 pelvic specimens. The morphological features of the second, third, fourth and 5th metacarpal bones and iliac crest were observed. The following indexes were measured: arc height and length of metacarpal head articular surface, volar-dorsal metacarpal diameter, ulnoradial diamater, arc height and length of iliac crest, and inner and outer diameter...
November 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29457362/a-multinational-observational-investigation-of-illness-perceptions-and-quality-of-life-among-patients-with-a-fontan-circulation
#11
Christina E Holbein, Nicholas D Fogleman, Kevin Hommel, Silke Apers, Jessica Rassart, Philip Moons, Koen Luyckx, Maayke A Sluman, Junko Enomoto, Bengt Johansson, Hsiao-Ling Yang, Mikael Dellborg, Raghavan Subramanyan, Jamie L Jackson, Werner Budts, Adrienne H Kovacs, Stacey Morrison, Martha Tomlin, Kathy Gosney, Alexandra Soufi, Katrine Eriksen, Corina Thomet, Malin Berghammer, Luis Alday, Edward Callus, Susan M Fernandes, Maryanne Caruana, Samuel Menahem, Stephen C Cook, Gwen R Rempel, Kamila White, Paul Khairy, Shelby Kutty, Gruschen Veldtman
OBJECTIVE: First, to compare QOL and illness perceptions between patients with a Fontan circulation and patients with anatomically simple defects (ie, atrial septal defects [ASD] or ventricular septal defects [VSD]). Second, to explore illness perceptions as a mediator of the association between congenital heart disease (CHD) diagnosis and QOL. DESIGN: Cross-sectional observational study. SETTING: Twenty-four cardiology centers from 15 countries across five continents...
February 18, 2018: Congenital Heart Disease
https://www.readbyqxmd.com/read/29457319/the-impact-of-b-1-correction-on-mp2rage-cortical-t-1-and-apparent-cortical-thickness-at-7t
#12
Roy A M Haast, Dimo Ivanov, Kâmil Uludağ
Determination of cortical thickness using MRI has often been criticized due to the presence of various error sources. Specifically, anatomical MRI relying on T1 contrast may be unreliable due to spatially variable image contrast between gray matter (GM), white matter (WM) and cerebrospinal fluid (CSF). Especially at ultra-high field (≥ 7T) MRI, transmit and receive B1 -related image inhomogeneities can hamper correct classification of tissue types. In the current paper, we demonstrate that residual B1+ (transmit) inhomogeneities in the T1 -weighted and quantitative T1 images using the MP2RAGE sequence at 7T lead to biases in cortical thickness measurements...
February 18, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29457287/zero-te-based-pseudo-ct-image-conversion-in-the-head-and-its-application-in-pet-mr-attenuation-correction-and-mr-guided-radiation-therapy-planning
#13
Florian Wiesinger, Mikael Bylund, Jaewon Yang, Sandeep Kaushik, Dattesh Shanbhag, Sangtae Ahn, Joakim H Jonsson, Josef A Lundman, Thomas Hope, Tufve Nyholm, Peder Larson, Cristina Cozzini
PURPOSE: To describe a method for converting Zero TE (ZTE) MR images into X-ray attenuation information in the form of pseudo-CT images and demonstrate its performance for (1) attenuation correction (AC) in PET/MR and (2) dose planning in MR-guided radiation therapy planning (RTP). METHODS: Proton density-weighted ZTE images were acquired as input for MR-based pseudo-CT conversion, providing (1) efficient capture of short-lived bone signals, (2) flat soft-tissue contrast, and (3) fast and robust 3D MR imaging...
February 18, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29457192/influence-of-orthodontic-appliance-derived-artifacts-on-3-t-mri-movies
#14
Erika Ozawa, Ei-Ichi Honda, Kulthida Nunthayanon Parakonthun, Hiroko Ohmori, Kazuo Shimazaki, Tohru Kurabayashi, Takashi Ono
BACKGROUND: Magnetic resonance imaging (MRI) has been used to study configurations of speech organs in the resting state. However, MRI is sensitive to metals, and numerous types of metallic appliances, most of which have a large magnetic susceptibility, are used in orthodontic treatment and may cause severe artifacts on MRI. We have developed techniques for obtaining MRI movies of the oral region, to evaluate articulatory changes, especially movement of the tongue, palate, and teeth, pre- and post-orthodontic/orthognathic treatment...
February 19, 2018: Progress in Orthodontics
https://www.readbyqxmd.com/read/29456977/epidemiologic-and-demographic-features-therapeutic-intervention-and-prognosis-of-the-patients-with-cerebral-aneurysm
#15
Masih Sabouri, Amir Mahabadi, Homayoun Tabesh, Majeed Rezvani, Masih Kouchekzadeh, Ali Namazi
Background: Cerebral aneurysms are a kind of cardiovascular diseases which are accompanied with high morbidity and mortality due to rupturing and causing subarachnoid hemorrhages. The current study aimed to determine epidemiologic and demographic features and prognosis of patients with cerebral aneurysms. Materials and Methods: In this cross-sectional study, 465 patients with cerebral aneurysms hospitalized in Al-Zahra Hospital were studied. The required information including demographic, epidemiologic, and clinical features of the disease were extracted from their records...
2018: Advanced Biomedical Research
https://www.readbyqxmd.com/read/29456964/anatomical-correlation-between-nasal-vascularisation-and-the-design-of-the-endonasal-pedicle-flaps
#16
Juan R Gras-Cabrerizo, Elena García-Garrigós, Joan R Montserrat-Gili, Juan R Gras-Albert, Rosa Mirapeix-Lucas, Humbert Massegur-Solench, Miquel Quer-Agusti
Arteries that supply the nasal septum and the lateral nasal wall include vessels that originate from the external carotid artery and from the internal carotid artery. A variety of local endonasal pedicle flaps can be used in different anatomical areas for endoscopic skull base reconstruction. The main flaps are based on terminal branches of the sphenopalatine artery and on anterior ethmoidal artery. This study will describe the anatomy of these vessels and their relationship with the main flaps.
March 2018: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/29456948/is-routine-use-of-high-resolution-computerized-tomography-of-temporal-bone-in-patients-of-atticoantral-chronic-suppurative-otitis-media-without-intracranial-complications-justified
#17
Meeta Bathla, Hiren Doshi, Atul Kansara
Role of high resolution computerized tomography (HRCT) of temporal bone is established in cases of atticoantral chronic suppurative otitis media (CSOM) with intracranial complications. Routine use of HRCT in management of patients of atticoantral CSOM without intracranial complications has been an issue of debate. The aim of this study was to evaluate the routine use of HRCT of temporal bone in such cases. This study was a prospective study done at LG hospital, AMC MET Medical College, Ahmedabad to evaluate and compare the temporal bone findings in HRCT and intraoperative findings in 100 patients with atticoantral CSOM...
March 2018: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/29456935/radiological-evaluation-of-cochlear-orientation-and-its-implications-in-cochlear-implantation
#18
Avvaru Satya Kiran, Ajoy Mathew Varghese, Aparna Irodi, Anjali Lepcha, John Mathew, Visalakshi Jeyaseelan
To test whether there are variations in cochlear orientation with respect to age and sex, and its relevance in cochlear implant surgery. Implant otologists rely upon the anatomic landmarks including the facial recess and round window niche and round window membrane for accessibility and placement of electrode array into scala tympani of basal turn of cochlea. Anecdotally, surgeons note variations in cochlear orientation with respect to age. Cochlear orientation studied radiologically by pre-operative CT scan of temporal bone can guide a Surgeon's approach to cochlear implantation...
March 2018: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/29456934/outcomes-of-transconjuctival-sutureless-27-gauge-vitrectomy-for-stage-4-retinopathy-of-prematurity
#19
Parag K Shah, Vishma Prabhu, Venkatapathy Narendran
AIM: To report our initial experience with lens-sparing vitrectomy for stage 4 retinopathy of prematurity using the 27-gauge (G) system. METHODS: This retrospective case series involved nine eyes of five babies with active stage 4 ROP, who underwent 27-G lens-sparing vitrectomy. Surgery was done using 27-G valved cannulas and sclerotomies were made 1.5 mm from the limbus. Bilateral sequential vitrectomy was done in eight eyes. RESULTS: At one-year follow-up, anatomical outcome was favourable in all nine (100%) eyes...
February 8, 2018: World Journal of Clinical Pediatrics
https://www.readbyqxmd.com/read/29456905/a-comprehensive-review-of-the-sternal-foramina-and-its-clinical-significance
#20
REVIEW
Paul J Choi, Joe Iwanaga, R Shane Tubbs
A sternal foramen (SF), which arises from the incomplete fusion of the cartilaginous neonatal sternum, is a relatively common anatomical variation found in 2.5% to 13.8 % of all individuals. SFs are usually located at the lower third of the sternal body and their average diameter is 6.5 mm. An SF is subclinical; however, its close proximity to the thoracic organs, i.e., the heart and lungs, entails a risk of serious complications from blinded sternal interventions. Moreover, its presence can lead to misinterpretation of radiological and postmortem findings...
December 8, 2017: Curēus
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